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A2115 / 2019 / Processeurs à partir de 3,0 GHz 6 cœurs i5, jusqu'à 3,6 GHz 8 cœurs i9. Commercialisé le 19 mars 2019.

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Replaced internal HDD with Samsung SSD... not working correctly. Help

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I’ve been on the phone with Apple support for days and no one can help me. I replaced the internal HDD drive with a solid state Samsung 870 QVO 2TB. This iMac had a fusion drive set up with a 128 gig internal drive attached to motherboard. I loaded operating system on the new SSD drive and I’m having tons of problems. I can’t copy files from an external drive to the SSD with getting (error -36). Software installations aren’t going smoothly. HELP!!!! How do I get the Mac to just use the one internal ssd drive that I installed (SAMSUNG) and ignore the other small internal drive. I don’t want a fusion system. Just one 2tb SSD drive that I installed. Hope this makes sense. Things work fine when I install the operating system on the 128 gig internal ssd drive that’s on the motherboard. I obviously don’t want that. @danj help!!!

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To be clear you now have two drives: a 128GB blade PCIe SSD and a 2 TB SATA SSD.

Both drives presently have macOS installed as bootable drives, formatted GUID/APFS and you installed Mojave (10.14.6) or Catalina (10.15.2) on each. Is that where we are now?

par

The operating system is on the 2 TB SATA SSD that I just purchased. That isn't working well. Having issues copying files from external drives onto the iMac and also having installation issues with certain software.

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I'm in Catalina.

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Is there a way to message you privately? I'd love to call you or have you call me to discuss... I've been on with Apple tech support and no one can help me. They can't figure it out..

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Part of the function of the blog is to share ;-}

I think you have a simple problem here!

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Go into your Systems Preferences settings open up the Startup Disk control panel you should see two drives, unlock your settings and click on your 2 TB SSD. The system should ask you to restart at that point let’s do that.

Did that resolve the issue?

If not the blade SSD is still set as a cache drive to your original HDD which is messing us up. Did you break the fusion drive set before you took the HDD out?

Apple changed things with Catalina which has messed up quite a few people between dropping support for older 32bit apps and the retiring some API calls.

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That doesn't resolve the issue. I also did not break the fusion drive set up before I took the HDD out which is probably the main issue here. That's about the only thing I haven't tried up to this point. How do I do it in Catalina??

par

OK, let's look at your drives via Disk Utility. You should see two drives in the left pane open each twisty so you can see the layers of each drive.

Post a snapshot of each layer (clicking on the first then the second then the third) posting each drive and each layer of each (six images) Ajout d'images à une question existante So I can see whats up.

par

I submitted some photos.. this is so frustrating... ugh. Thanks so much for helping me..

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@danj Is what I'm trying to achieve even possible? Or will this system always want the operating system on the small internal 128 gig pci-e ssd drive??

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Your snapshots show multiple Samsung volumes I don't see container established on the Samsung drive. Basically, the drive is not properly configured.

You should create a bootable USB thumb drive (OS installer drive) following this guide How to create a bootable macOS Catalina installer drive. Here's the OS installer file macOS Catalina

Then booting up under the thumb drive Go back and delete all of the Samsung drives in Disk Utility, then wipe all of your drives down so we have a clean slate.

Now leave the PCI Blade SSD alone as you stated you wanted the SATA drive to be the bootable drive. Using the installer make sure you select the Samsung drive for the OS installer and let it go!

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Elvio Fernandes sera éternellement reconnaissant.
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